NEW ASSIGNMENTS FOR THE INFRARED-SPECTRUM H-3(+)

Calculations are presented for H-3(+) using two potential energy surfa ces, one ab initio, the other spectroscopically determined, both of wh ich include allowance for the adiabatic correction to the Born-Oppenhe imer potential. Systematically labeled energy levels for H-+(3) are pr esented and the spectra calculated for a number of temperatures. Assig nments are given for 105 or about 85% of the published unassigned H-3( +) infrared transitions. Forty previously assigned transitions are rel abeled or reassigned. Calculations for higher J levels are discussed. (C) 1997 Academic Press, Inc.